horseradish potato salad

INGREDIENTS

• 3 pounds small (2-inch) potatoes, your choice of variety (I found a rainbow-colored pack, and couldn’t resist, clearly)
• 1/4 cup red onion, chopped
• 1 tablespoon white-wine vinegar
• 1 cup sour cream (or 1/2 cup sour cream, 1/2 cup yogurt)
• 2 tablespoons fresh dill, finely chopped
• 1/4 cup chopped fresh chives (frustratingly, couldn’t find these)
• 1 tablespoon Dijon mustard
• 3 tablespoons prepared horseradish
• 1 teaspoon salt
• 1/2 teaspoon black pepper